package 栈;

/**
 * @Author: biubiu0002
 * @Date: 2021-06-18 19:50
 **/

import java.util.concurrent.locks.ReentrantLock;

/**
 * 双栈
 */
public class 表达式求值 {
    public static void main(String[] args) {
        ReentrantLock reentrantLock = new ReentrantLock();

    }
}
